This study was performed in order to closely assess a specific building type, the apsidal building, during the Protogeometric period in Greece. This period lasted from approximately 1000-900 B.C. It has often been referred to as the "Greek Dark Ages", but with more research such as this we will better understand the period. This study was inspired by the Mitrou Archaeological Project in East Lokris, Greece. During excavations in summer 2004, a large Protogeometric apsidal building was unearthed. Only a dozen of such buildings have been found, therefore making this an important find. The use and importance of these buildings is debated, making in depth research essential. Each apsidal building was studied by certain physical characteristics, including size, orientation, architectural features, and distribution of artifacts. These qualities helped in assessing the possible functions of the buildings and also their importance in their communities. It was found that these buildings do appear to have been significant and that their functions may vary from dwellings, to community buildings, to political purposes. Several interesting parallels were also discovered, including similarities in building orientations. In conclusion, this research is one of many such studies that should be conducted in order to better understand the Protogeometric period of Greece.